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We can say that f of d is a relative minimum point if f of d is less than or equal to f of x for all x in an interval, in an open interval, between d minus h and d plus h for h is greater than 0.

Review how we use differential calculus to find relative extremum (minimum and maximum) points.

For example, this, you could have a relative minimum in your second derivative, but your second derivative could still be positive there. So what if the second derivative was like that?

Learn what local maxima/minima look like for multivariable function.

And a relative maximum point or relative minimum, they're relatively easy (laughing) to spot out visually. You will see a relative maximum point as the high point on a hill, and the hill itself doesn't even have …

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خان اکیڈیمی - Khan Academy ... خان اکیڈیمی

So what we're going to try to do this video is try to come up with some criteria, especially involving the derivative of the function around x equals a, to figure out if it is a minimum or a maximum point.

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